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July 9th, 2026 :: 4:45 am CDT   

Local Weather Report for
Decatur
Illinois, United States

 Current Decatur Weather Conditions Updated July 9th at 3:54 am 
Temperature:73°F Dew Point:70°F
Barometer:29.92 inHg Wind:N 15 Mph
Humidity:88.5% Visibility:0M
 
 Decatur Weather Forecast Summary  
 
Today
Jul 9th
Friday
Jul 10th
Saturday
Jul 11th
Sunday
Jul 12th
Monday
Jul 13th
Mostly Sunny Thundershowers Thundershowers Sunny Sunny
84°F
82°F
69°F
75°F
69°F
79°F
65°F
81°F
59°F
 
 Decatur Detailed Weather Forecast  
 
Thursday, July 9th, 2026
Morning Temperature: 75°F
Mostly sunny. Chance of a thunderstorm.
Afternoon Temperature: 83°F
A mix of cloud and sun with a slight chance of showers or thundershowers.
Evening Temperature: 74°F
Clear with a chance of showers or thundershowers.
Friday, July 10th, 2026
Overnight Temperature: 69°F
A mix of clear and cloudy skies with a chance of showers. Slight chance of a thunderstorm.
Morning Temperature: 74°F
Sunny with cloudy periods with a chance of showers or thundershowers.
Afternoon Temperature: 81°F
A mix of cloud and sun with a slight chance of showers or thundershowers.
Evening Temperature: 75°F
A mix of cloudy and clear skies with showers likely. Chance of a thunderstorm.
Saturday, July 11th, 2026
Overnight Temperature: 70°F
A mix of clear and cloudy skies with showers likely. Slight chance of a thunderstorm.
Morning Temperature: 72°F
Mostly cloudy with a chance of showers or thundershowers.
Afternoon Temperature: 75°F
Mostly cloudy with showers likely. Chance of a thunderstorm. Windy at times.
Evening Temperature: 73°F
Mostly clear with a chance of showers or thundershowers. Windy at times.
Sunday, July 12th, 2026
Overnight Temperature: 66°F
Clear. Windy at times.
Morning Temperature: 70°F
Sunny. Windy at times.
Afternoon Temperature: 79°F
Sunny. Slight chance of a thunderstorm. Windy at times.
Evening Temperature: 72°F
Clear. Chance of a thunderstorm.
Monday, July 13th, 2026
Overnight Temperature: 62°F
Clear.
Morning Temperature: 66°F
Sunny. Windy at times.
Afternoon Temperature: 79°F
Sunny. Slight chance of a thunderstorm. Windy at times.
Evening Temperature: 74°F
Clear. Chance of a thunderstorm.
Tuesday, July 14th, 2026
Overnight Temperature: 68°F
Clear.
Morning Temperature: 73°F
Sunny. Slight chance of a thunderstorm.
Afternoon Temperature: 82°F
Sunny with cloudy periods. Chance of a thunderstorm.
Evening Temperature: 78°F
Clear with cloudy periods. Chance of a thunderstorm.
Wednesday, July 15th, 2026
Overnight Temperature: 69°F
Clear.
Morning Temperature: 75°F
Sunny. Chance of a thunderstorm.
Afternoon Temperature: 85°F
Sunny with cloudy periods. Chance of a thunderstorm.
Evening Temperature: 79°F
Clear. Chance of a thunderstorm.
Thursday, July 16th, 2026
Overnight Temperature: 72°F
Clear. Slight chance of a thunderstorm.
Morning Temperature: 76°F
Sunny. Chance of a thunderstorm. Windy at times.
Afternoon Temperature: 85°F
Sunny. Chance of a thunderstorm. Windy at times.
Evening Temperature: 79°F
Clear. Chance of a thunderstorm.
Friday, July 17th, 2026
Overnight Temperature: 73°F
Clear. Slight chance of a thunderstorm.
Morning Temperature: 78°F
Sunny. Chance of a thunderstorm.
Afternoon Temperature: 87°F
Sunny. Chance of a thunderstorm. Windy at times.
Evening Temperature: 81°F
Clear. Chance of a thunderstorm.





 

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This WeatherCity Weather Forecast for Decatur, Illinois, United States is computed using a computer-generated forecast model and should be considered experimental. Please confirm this weather information with your official weather information office

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